Removal of organic matter through full-scale drinking water biofilters
[ 1 ] Instytut Inżynierii Środowiska i Instalacji Budowlanych, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] pracownik
2021
artykuł naukowy
angielski
- biological activated carbon
- biofiltration
- drinking water
- FDA test
- microbiological activity
- organic matter
EN The research was carried out in a full-scale water treatment plant (WTP) in Poland to which water is supplied from ground and infiltration water intakes. The WTP has recently launched the second stage of the water treatment process based on the combination of ozonation and biologically activated carbon (BAC) filtration. The samples of water and the filter bed were collected once a month. Physical and chemical analyses were carried out, as well as the identification of bacterial species by way of biochemical diagnostics. The investigation proved that the examined carbon filter was biologically active. A correlation between the decrease in the dissolved oxygen concentration and the efficiency of carbon compounds removal was found. It was concluded that the total number of psychrophilic bacteria had impact on the biofiltration efficiency. The microbiological activity of treated water was rising during filtration, while the microbiological activity of the filter bed was relatively stable. Two microorganisms, phingomonas paucimobilis and Pseudomonas fluorescens, belonging to bacterial species typically inhabiting BAC filters, were identified. The research showed the absence of any members of the Enterobacteriaceae family in water or the filter bed. Studies have confirmed that FDA test is fast, simple and inexpensive, so it can be an effective tool in the routine control of biodegradation of organic matter in biofilter beds.
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